Fig. 2
From: Ordering, flexibility and frustration in arrays of porphyrin nanorings
Scanning probe microscopy (SPM) images of porphyrin nanorings deposited on a highly oriented pyrolytic graphite (HOPG) surface. a Scanning tunnelling microscopy (STM) image of continuous c-P12 domain. The bright spots correspond to stacks of multiple c-P12 rings. b High-resolution STM image showing packing of c-P12 molecules in a single domain. c Atomic force microscopy (AFM) image showing large-scale structure of c-P12 domains on HOPG. Dark regions correspond to voids in the nanoring monolayer. (Inset) High-resolution image showing hexagonal packing of c-P12 molecules in region indicated by the white box in the main image. d STM image of c-P10 domains on HOPG. e High-resolution image of c-P10 molecules. f AFM image showing large-scale structure of c-P10 domains on HOPG. (Inset) High-resolution image of a single c-P10 domain at the region indicated by the white box in the main image
